From fb8fc4d8002b050407f7f9fcee546d5c672562f8 Mon Sep 17 00:00:00 2001
From: David Garske <david@wolfssl.com>
Date: Thu, 1 Aug 2019 11:54:28 -0700
Subject: [PATCH] Fix for scan-build warning with altName->name possible use of
 NULL pointer.

---
 src/internal.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/internal.c b/src/internal.c
index 64b16c485..14b87d4e6 100644
--- a/src/internal.c
+++ b/src/internal.c
@@ -8424,8 +8424,10 @@ static int CheckForAltNames(DecodedCert* dCert, char* domain, int* checkCN)
             break;
         }
         /* No matches and wild pattern match failed. */
-        else if (altName->name[0] == '*' && match == 0)
+        else if (altName->name && altName->len >=1 &&
+                altName->name[0] == '*' && match == 0) {
             match = -1;
+        }
 
         altName = altName->next;
     }